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Merge commit '4fb311c804098d78e5ce5f527f9a9c37536d3a08'

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* commit '4fb311c804098d78e5ce5f527f9a9c37536d3a08':
  Drop memalign hack

Merged, as this may indeed be uneeded since
46e3936fb0.

Merged-by: Clément Bœsch <u@pkh.me>
This commit is contained in:
Clément Bœsch 2017-03-20 08:52:07 +01:00
commit 3835283293
2 changed files with 3 additions and 40 deletions
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7
configure vendored
View File

@ -371,7 +371,6 @@ Advanced options (experts only):
--disable-safe-bitstream-reader
disable buffer boundary checking in bitreaders
(faster, but may crash)
--enable-memalign-hack emulate memalign, interferes with memory debuggers
--sws-max-filter-size=N the max filter size swscale uses [$sws_max_filter_size_default]
Optimization options (experts only):
@ -1700,7 +1699,6 @@ CONFIG_LIST="
$PROGRAM_LIST
$SUBSYSTEM_LIST
fontconfig
memalign_hack
memory_poisoning
neon_clobber_test
pic
@ -1835,7 +1833,6 @@ ARCH_FEATURES="
local_aligned_8
local_aligned_16
local_aligned_32
simd_align
simd_align_16
simd_align_32
"
@ -2335,7 +2332,6 @@ aligned_stack_if_any="aarch64 ppc x86"
fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
fast_unaligned_if_any="aarch64 ppc x86"
simd_align_if_any="simd_align_16 simd_align_32"
simd_align_16_if_any="altivec neon sse"
simd_align_32_if_any="avx"
@ -6410,9 +6406,6 @@ enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
enable dxva2_lib
! enabled_any memalign posix_memalign aligned_malloc &&
enabled simd_align && enable memalign_hack
# add_dep lib dep
# -> enable ${lib}_deps_${dep}
# -> add $dep to ${lib}_deps only once

36
libavutil/mem.c
View File

@ -77,22 +77,12 @@ void av_max_alloc(size_t max){
void *av_malloc(size_t size)
{
void *ptr = NULL;
#if CONFIG_MEMALIGN_HACK
long diff;
#endif
/* let's disallow possibly ambiguous cases */
if (size > (max_alloc_size - 32))
return NULL;
#if CONFIG_MEMALIGN_HACK
ptr = malloc(size + ALIGN);
if (!ptr)
return ptr;
diff = ((~(long)ptr)&(ALIGN - 1)) + 1;
ptr = (char *)ptr + diff;
((char *)ptr)[-1] = diff;
#elif HAVE_POSIX_MEMALIGN
#if HAVE_POSIX_MEMALIGN
if (size) //OS X on SDK 10.6 has a broken posix_memalign implementation
if (posix_memalign(&ptr, ALIGN, size))
ptr = NULL;
@ -144,25 +134,11 @@ void *av_malloc(size_t size)
void *av_realloc(void *ptr, size_t size)
{
#if CONFIG_MEMALIGN_HACK
int diff;
#endif
/* let's disallow possibly ambiguous cases */
if (size > (max_alloc_size - 32))
return NULL;
#if CONFIG_MEMALIGN_HACK
//FIXME this isn't aligned correctly, though it probably isn't needed
if (!ptr)
return av_malloc(size);
diff = ((char *)ptr)[-1];
av_assert0(diff>0 && diff<=ALIGN);
ptr = realloc((char *)ptr - diff, size + diff);
if (ptr)
ptr = (char *)ptr + diff;
return ptr;
#elif HAVE_ALIGNED_MALLOC
#if HAVE_ALIGNED_MALLOC
return _aligned_realloc(ptr, size + !size, ALIGN);
#else
return realloc(ptr, size + !size);
@ -227,13 +203,7 @@ int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
void av_free(void *ptr)
{
#if CONFIG_MEMALIGN_HACK
if (ptr) {
int v= ((char *)ptr)[-1];
av_assert0(v>0 && v<=ALIGN);
free((char *)ptr - v);
}
#elif HAVE_ALIGNED_MALLOC
#if HAVE_ALIGNED_MALLOC
_aligned_free(ptr);
#else
free(ptr);